/Engine/Source/Runtime/ImageCore/Public/ImageParallelFor.h
You can use this for read (returnProcessLinearPixelsAction::ReadOnly) or read-write (returnProcessLinearPixelsAction::Modified).ImageCore.h in global namespace: ImageParallelForComputeNumJobsForPixels ImageParallelForComputeNumJobsForRows
namespace FImageCore { enum ProcessLinearPixelsAction { ReadOnly, Modified, } }